PlatformSupported 144 media/video/capture/video_capture_device_unittest.cc VideoCaptureDeviceMFWin::PlatformSupported() PlatformSupported 51 media/video/capture/win/video_capture_device_mf_win.h static bool PlatformSupported(); PlatformSupported 248 media/video/capture/win/video_capture_device_win.cc DCHECK(VideoCaptureDeviceMFWin::PlatformSupported());